linux-ext4 - Re: [PATCH] resize2fs: add support for resizing filesystems with ea

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Mon, 24 Jul 2017 00:08:37 -0400
From:   Theodore Ts'o <tytso@....edu>
To:     Tahsin Erdogan <tahsin@...gle.com>
Cc:     Andreas Dilger <adilger@...ger.ca>, linux-ext4@...r.kernel.org
Subject: Re: [PATCH] resize2fs: add support for resizing filesystems with
 ea_inode feature

On Fri, Jul 14, 2017 at 05:38:49PM -0700, Tahsin Erdogan wrote:
> Resizing filesystems with ea_inode feature was disallowed so far
> because the code for updating the ea entries was missing. This patch
> adds that support.
> 
> Signed-off-by: Tahsin Erdogan <tahsin@...gle.com>

Thanks, applied.  I do have a few comments; if you can look into
providing some test cases, that would be great.  Also, although this
isn't first change that we've added to resize2fs which has this
property, it used to be that if resize2fs was interrupted, the user
could usually recover by running e2fsck.  With ea_inode, there will be
cases where resize2fs getting interrupted could result in the file
system's extended attributes getting pretty badly scrambled.

Using an undo file is one way to solve the problem; so perhaps
something we should consider is making the undo file enabled by
default.  (Although then we need to figure out where to put it; the
current directory might not be the right place, especially if it
happens to be /tmp.)

					- Ted